Dryopteris expansa (C.Presl) Fraser-Jenk. & Jermy
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Authority
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
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Family
Dryopteridaceae
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Scientific Name
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Description
Species Description - Much like no. 10 [Dryopteris campyloptera Clarkson]; rhizome often more ascending or suberect; lvs more upright, the petiole half to fully as long as the blade; scales with a dark center; 2n=82. Moist woods and rocky slopes; interruptedly circumboreal, in Amer. s. to Que., s. Ont., n. Mich., nw. Minn., and Calif. (D. dilatata)
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Common Names
northern wood-fern